CVE-2026-126473

{
  "etk_id": "ETK-2026-4383",
  "cve_id": "CVE-2026-126473",
  "display_id": "CVE-2026-126473",
  "ghsa_id": "GHSA-jqqh-x5q5-wvhp",
  "euvd_id": "EUVD-2026-124951",
  "status": "published",
  "anchor_state": "anchored",
  "title": "OAuth scope authorization bypass in OpenEMR",
  "summary": "OpenEMR versions before 8.4.0 mishandle canonicalization and containment of OAuth scopes for FHIR access. An unauthenticated attacker may obtain unapproved system-level permissions to read, modify, or create Patient records. Exploitation requires access to the OAuth client registration and authorization functionality.",
  "mitigation": "Upgrade OpenEMR to version 8.4.0 or later. Until upgraded, restrict access to OAuth client registration and FHIR authorization endpoints to trusted users and networks.",
  "vendor": "openemr",
  "product": "openemr",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 8.4.0"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "8.4.0"
      ],
      "package_name": "openemr",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 9.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 18.6968989,
  "t0_at": "2026-11-13T09:34:58.505000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-13T09:34:58.505000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-13T09:34:58.505000+00:00",
      "url": "https://github.com/advisories/GHSA-jqqh-x5q5-wvhp"
    }
  }
}